Alright, let's work through 17978471 times 70722809 step by step
17978471 × 70722809 = 70722809 × (17978471)
+ 70722809 × 1 resulting in 70722809
+ 70722809 × 70 that results in 4950596630
+ 70722809 × 400 resulting in 28289123600
+ 70722809 × 8000 what gives us 565782472000
+ 70722809 × 70000 that equals 4950596630000
+ 70722809 × 900000 yielding 63650528100000
+ 70722809 × 7000000 that equals 495059663000000
+ 70722809 × 10000000 what gives us 707228090000000

= 1271487970645039
